A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Correct gapping

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Old Oct 5, 2005 | 01:09 PM
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Default Correct gapping

Could someone tell me what the correct plug gapping on a 01 1.8t? The part store said .028, but someone else told me .044, plus the plugs I bought were 'pre gapped' at like .039-.04. Which is correct.
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Old Oct 5, 2005 | 01:10 PM
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Nate (ETKA+Scumbag)'s Avatar
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Umm, what kind of plugs?
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Old Oct 5, 2005 | 02:10 PM
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NGK copper .032 stock or less if chipped
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Old Oct 5, 2005 | 10:03 PM
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Default Re: Umm, what kind of plugs?

Denso Iridium IK20
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Old Oct 6, 2005 | 08:39 AM
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Default Yes, NGK copper .032 stock or the rules of thumb is

-.004" for every 50hp made by more boost. So a chipped 1.8T gaining 50hp should be about .028".

I am currently experimenting with that formula by going .026" since I am K04'ed to like 225hp - 240hp. I will do this and log block 020 for timing retard.

But ya .028" on chipped is right, I ran that for a while, good times...
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